Scoring knife blade



FIG. 1 is a front elevational view of a scoring knife blade, showing our new design;

FIG. 2 is a right end view thereof;

FIG. 3 is a back elevational view thereof;

FIG. 4 is a left end view thereof;

FIG. 5 is a top plan view thereof; and

FIG. 6 is a bottom plan view thereof. 

The ornamental design of a scoring knife blade, substantially as shown. 